Alloy 75,Haynes 75 Forgings,UNS N06075,E FORU

British Specs:BS HR5 Alloy 75 Bar BS HR203 Alloy 75 sheet BS HR403 Alloy 75 tube* BS HR504 Alloy 75 Bar (rivet)，American Specs:，German Specs:WS 2.4630 WS 2.4951,AFNOR NC 20T

**Technical Datasheet: Alloy 75 (Haynes 75 / UNS N06075) Forgings** **1. Introduction** Alloy 75 (commercially known as **Haynes 75** and standardized as **UNS N06075**) is a solid-solution strengthened nickel-chromium-tungsten alloy specifically engineered for extreme high-temperature service. In **forgings** form, this material achieves superior mechanical properties through controlled deformation processes that refine the microstructure and enhance grain flow characteristics. Alloy 75 forgings deliver optimal performance in critical applications requiring exceptional high-temperature strength, oxidation resistance, and structural reliability at temperatures up to 1200°C (2200°F). **2. Chemical Composition (Weight %)** | Element | Content (%) | Role in the Alloy | |---------|-------------|-------------------| | Nickel (Ni) | Balance | Forms austenitic matrix, provides corrosion resistance and ductility | | Chromium (Cr) | 18.0-21.0 | Imparts oxidation and sulfidation resistance through protective scale formation | | Tungsten (W) | 14.0-16.0 | Primary solid-solution strengthener for high-temperature strength | | Iron (Fe) | ≤3.0 | Residual element | | Cobalt (Co) | ≤2.0 | Residual element | | Manganese (Mn) | ≤1.0 | Aids in deoxidation during melting | | Silicon (Si) | ≤0.50 | Enhances oxidation resistance | | Carbon (C) | ≤0.10 | Contributes to strength | | Sulfur (S) | ≤0.015 | Impurity element | | Phosphorus (P) | ≤0.015 | Impurity element | **3. Physical Properties** | Property | Value | Condition | |----------|-------|-----------| | Density | 8.94 g/cm³ (0.323 lb/in³) | At 20°C | | Melting Point | ~1370°C (~2500°F) | - | | Thermal Expansion Coefficient | 12.1 μm/m·°C (6.7 μin/in·°F) | 20-1000°C | | Thermal Conductivity | 11.2 W/m·K | At 20°C | | Specific Heat | 431 J/kg·K (0.103 Btu/lb·°F) | At 20°C | | Modulus of Elasticity | 224 GPa (32.5 × 10⁶ psi) | At 20°C | **4. Mechanical Properties (Typical for Forged & Annealed Condition)** **Room Temperature Properties:** - Tensile Strength: 790-895 MPa (115-130 ksi) - Yield Strength (0.2% Offset): 380-485 MPa (55-70 ksi) - Elongation: 35-45% - Reduction of Area: 45-55% - Hardness: Rb 85-95 **Elevated Temperature Performance:** - Superior creep and stress-rupture strength at temperatures above 980°C (1800°F) - Excellent fatigue resistance under cyclic loading conditions - Maintains mechanical properties during prolonged high-temperature exposure **5. Key Characteristics & Advantages** - **Optimized Grain Structure**: Forging process refines grain size and improves mechanical properties - **Superior Directional Properties**: Controlled grain flow pattern enhances strength and fatigue resistance - **Exceptional High-Temperature Capability**: Maintains structural integrity under extreme thermal and mechanical stress - **Enhanced Density**: Forging eliminates porosity and internal defects common in cast products - **Improved Impact Resistance**: Fine-grained structure provides better toughness and impact strength - **Superior Thermal Fatigue Resistance**: Withstands repeated thermal cycling without cracking **6. Product Applications** Alloy 75 forgings are specified for critical high-temperature structural components including: **Aerospace & Defense:** - Gas turbine engine discs and hubs - Turbine stator support rings - Combustion chamber mounting flanges - Afterburner component supports - Nozzle guide vanes and rings **Industrial Processing:** - High-temperature valve bodies and stems - Furnace roller shafts and supports - Heat treatment fixture components - Process reactor internals - High-temperature pump components **Power Generation:** - Turbine blade retainers - Combustion system components - High-temperature fasteners and bolts - Heat exchanger headers and supports **7. International Standards** Alloy 75 forgings conform to the following international standards: | Standard Organization | Standard Designation | Description | |----------------------|---------------------|-------------| | ASTM International | ASTM B564 | Standard Specification for Nickel Alloy Forgings | | Aerospace (SAE) | AMS 5718 | Bars, Forgings, and Rings 78Ni - 19Cr - 1.5Co - 1.0Mn - 0.50Si (Alloy 75) | | ASME | SB-564 | Nickel Alloy Forgings (pressure vessel code) | | Unified Numbering System | UNS N06075 | - | | ISO | ISO 9725 | Nickel alloy forgings for general purposes | **Forging Capabilities:** - **Open Die Forgings**: Large components up to 5000 kg - **Closed Die Forgings**: Complex shapes with minimal machining allowance - **Ring Rolled Forgings**: Seamless rings up to 3000 mm diameter - **Shape Forgings**: Near-net shape components **Quality Assurance:** - Ultrasonic testing per ASTM A388 - Liquid penetrant inspection per ASTM E165 - Radiographic examination per ASTM E94 - Macroetch testing per ASTM E340 - Full traceability and material certification **Heat Treatment:** - Solution annealing at 1175-1200°C (2150-2200°F) - Rapid cooling to preserve optimal microstructure - Stress relieving available when required **Disclaimer**: This technical data is provided for informational purposes only. Properties may vary based on manufacturing process, heat treatment, and specific product form. For critical applications, consult the manufacturer's current technical data sheets and relevant industry standards. Always verify material certification and testing requirements for your specific application.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2062 gallon liquid totes Special package is available on request.